EXPERIMENTAL STUDY OF BLAST FURNACE SLAG CONCRETE

The study presents the experimental investigation carried out to evaluate effects of replacing fine aggregate with that of blast furnace slag on various concrete properties. The basic objective of this study was to identify alternative source of good quality aggregate because the natural stone quarries are depleting very fast due to rapid pace of construction activities in India .The effect of replacing natural fine aggregate by slag on the compressive strength of cubes, split tensile strength of cylinders and flexural strength of beams are evaluated in this study. Use of slag ? a waste industrial by product of iron and steel production provides great opportunity to utilize it as an alternative to normally available aggregate. The test results of c oncrete were obtained by adding slag to fine aggregate as a replacement of stone aggregate in various percentages of 0%, 20%, 40%, 60%, 80% and 100%. All specimens were cured for 28 days before testing. From the study it has been observed that the blast fu rnace slag aggregate could be a good replacement of stone aggregate.